Pin.



/ d. F. MARKHAM.

PIN.

APPLICATION FILED JANA, 1912.

Patented June 11, 1912.

Gum,

COLUMBIA PLANOORAPH CD., WASHINGTON, D. c.

tinirnn STATES PATENT OFFICE.

CHARLES F. MARKI-IAM, 0F PROVIDENCE,'RHODE ISLAND.

PIN.

Specification of Letters Patent.

Application filed January 4, 1912.

To all whom it may concern:

Be it known that I, CHARLES F. MARK- HAM, a citizen of the United States, and resident of the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Pins, of which the following is a specification.

This invention relates to pins, and has for its object to provide a separate and independent catch member of the class adapted to receive and retain the pointed end of the pin-stem, the same being formed with a short base plate extending over the edges of which the edge of the front plate or body portion of the pin is rolled to retain the catch member in the back of the front plate, thus eliminating the necessity of using solder for this purpose.

A further object of the invention is to turn or curve the edges of the base plate of the catch member slightly upward from the plane thereof, whereby when said base plate lies against the back of the front plate the roll of the latter will engage and interlock with said turned-up edge firmly securing the said member in position. Then again, in rolling the edge of the front plate over the turned up edge of the base plate the pressure of the roll springs this edge downward and the natural resiliency of the metal also serves to assist in retaining the same in position.

1th these and other obgects 1n v1ew, the

invention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claim.

()f the accompanying drawings: Figure 1 is a central sectional side elevation of a pin having my improved catch member mounted therein. Fig. 2 is an enlarged perspective view of my improved catch member. Fig. 3 is a sectional side elevation of my catch member. Fig. 4- is an enlarged plan view of the underside of a pin showing my improved construction of catch member connected to the body thereof by rolling the edges of the latter over those of the former. Fig. 5- is a section on line 55 of Fig. 4: showing the catch member as secured in position by the rolled edge of the front plat-e. Fig. 6- is a section on line 66 of Fig. 4; showing the rolled edge of the front plate as engaging and forcing downward the turned up edge of the base Patented June 11, 1912.

Serial No. 669,334.

plate whereby the spring of the latter assists in retaining the same in posit-ion.

Referring to the drawings, 1 designates the body portion or front plate of the ordinary cutf or beauty pin which front plate is preferably constructed of thin sheet metal.

The essential feature of my present invention is the forming of the catch member 2 independent of the front plate and from a piece of sheet stock bent to form a base plate 3 whose width is substantially that of its length. This qualification is included to distinguish from the usual back plate which extends the full length of the pin body. The edges 4. of this base plate are preferably turned upward from the normal plane of the plate for the purposes hereinafter fully set forth. A narrow neck portion 5 extends upwardly from the rear portion of this base plate and has a forwardly extending curved hood 6 which is for the purpose of receiving and retaining the pointed end 7 of the pin-stem 8.

In assembling the parts of this pin, the base portion of the catch member is preferably set to rest against the rear face 10 of the front plate, the edge of the latter be ing then rolled over the upturned edges of the base plate thereby interlocking the edges of the base plate with those of the front plate. Then again, it is found in practice that the pressure of the roll 9 at the point 11 on the base plate, see Fig. 6, has a tendency to force and spring the turned up edges downward whereby the natural resiliency of the metal. further assists in retaining the plate in position. Then again, as illustrated in Fig. 6, the roll at the point 12, just forward of the turned up portion of the flange, is carried downward below or beyond this turned up edge forming an additional barrier or stop to prevent the member from moving forward from the end of the body portion where it is designed to be retained.

In forming a pin of my improved construction of precious metal, such as gold, silver. platinum, or the like, it will be seen that the body portion may be constructed of sive or objectionable fastening methods is effectually obviated.

Another feature of this construction is that I entirely obviate the necessity of using "the usual whole back plate, which extends the full length of the pin and to which the separate joint and catch members are ordinarily attached. By this construction and the elimination of this back plate, the entire pin, including both the joint and catch members may be formed of precious metal of the minimum thickness at the same time forming each individual part of sufficient thickness to stand the strain required of it.

I claim:

In a pin, a front plate, an independent catch member having a pin point receiving portion and a base plate integral with said portion, the edges of said base plate being turned slightly upward from the plane of said plate, said plate resting upon and being supported against the inner surface of the front plate, and the edges of said front plate being rolled over the said upturned edges of said base plate whereby the latter is interlocked with the roll of the front plate near the end of the pin body to rigidly M retain said member in position therein.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES F. MARKHAM. WVitnesses:

HOWARD E. BARLow, E. I. OGDEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

